Navigation Submenu Link: Add Open in new tab toggle to navigation block sidebar

[Infinite-Null]

Follow up of: #67262

What?

Adds the "Open in new tab" toggle option to the Navigation Submenu block's settings sidebar, making it accessible alongside other link settings.

Why?

Users need the ability to configure submenu links to open in new tabs. This setting was missing from the Navigation Submenu Inspector controls, creating an inconsistency with other navigation blocks.

Testing Instructions

1. Create a Navigation block with submenus
2. Select a Navigation Submenu block
3. Verify the "Open in new tab" toggle appears in the Inspector control
4. Toggle the setting and confirm it saves correctly
5. Test the link behavior on the frontend

Screencast:

Screen.Recording.2025-07-11.at.1.22.07.PM.mov

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Co-authored-by: Infinite-Null <ankitkumarshah@git.wordpress.org>
Co-authored-by: t-hamano <wildworks@git.wordpress.org>

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[Infinite-Null]

Hi @getdave, I’ve opened a follow-up PR that adds the ‘Open in new tab’ option to the Navigation Submenu Inspector controls for consistency. Please review it at your convenience! Thank you 🙌.

[t-hamano]

Thanks for the PR!

This PR works correctly just like the Navigation Link block, but I found that the "Reset all" button does not work properly:

I think we need to update here:

gutenberg/packages/block-library/src/navigation-submenu/edit.js

Lines 389 to 396 in 9bd4dd1

	resetAll={ () => {
	setAttributes( {
	label: '',
	url: '',
	description: '',
	rel: '',
	} );
	} }

The Navigation Link block will also need to be fixed in a follow-up PR.

[Infinite-Null]

Screen.Recording.2025-07-11.at.4.05.16.PM.mov

Hi @t-hamano, Thank you for the feedback 🙌. I have updated the PR and fixed the issue. Please review it at your convenience. Also, will open a follow-up PR with the fix for the same for the Navigation Link block shortly.

[t-hamano]

LGTM 👍